1901246728 has 32 divisors (see below), whose sum is σ = 3705336000. Its totient is φ = 913469760.

The previous prime is 1901246701. The next prime is 1901246741. The reversal of 1901246728 is 8276421091.

It is a super-2 number, since 2×1901246728² = 7229478241461411968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29533 + ... + 68371.

It is an arithmetic number, because the mean of its divisors is an integer number (115791750).

Almost surely, 2^1901246728 is an apocalyptic number.

It is an amenable number.

1901246728 is a deficient number, since it is larger than the sum of its proper divisors (1804089272).

1901246728 is a wasteful number, since it uses less digits than its factorization.

1901246728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39085 (or 39081 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1901246728 is about 43603.2880411558. The cubic root of 1901246728 is about 1238.8331739663.

The spelling of 1901246728 in words is "one billion, nine hundred one million, two hundred forty-six thousand, seven hundred twenty-eight".